<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form action="../../../websocket/login">
    登录名：<input type="text" name="username" placeholder="请输入姓名"/>
    <input type="submit" value="登录"/>
</form>
</body>
</html>